The rock drilling power, the rotary power of the drill rod and the feed driving force of the all-pneumatic rock drill machine are all pneumatically driven by compressed air. The weight of the light-duty pneumatic rock drill is 21-23kg, the weight of the medium-duty pneumatic rock drill is 24-27kg, and the weight of the heavy-duty pneumatic rock drill can reach 32kg or more. The greater the weight of the rock drilling head, the higher the rock drilling speed and mining speed, but it also brings about the improvement of the strength and rigidity requirements of the whole mechanism, which makes the overall weight of the equipment increase and the maneuverability deteriorates. The vertical, horizontal and any-angle inclined multi-function single-head light-duty rock drills usually installed with a single rock drill power head, including the rock drill stand, the weight of the power head and the control system are between 220-250kg, and the overall weight of the light single-head horizontal benchmark rock drill is between 220-250 kg. The weight of the machine is 200kg, the weight of the medium-sized single-head vertical rock drill is between 300-320kg, and the weight of the vertical, horizontal and any-angle inclined multi-functional double-head heavy-duty rock drill with two rock drill power heads is more than 700kg. , supporting a heavy-duty single-head rock drill installed on a self-propelled machine, the weight of its feed thruster and rock drilling bench is about 380kg. Depending on the application, up to 4 or 5 rock drilling heads can be installed on the pneumatic gantry rock drill. Due to the need of mobility, ordinary light and heavy-duty rock drills usually only install one rock-drilling power head, and some medium-duty rock drills are equipped with two rock-drilling power heads.
